2 documents found, page 1 of 1
Structure and rheological properties of a xyloglucan extracted from Hymenaea co...
Arruda, Isabel R. S.; Albuquerque, Priscilla B. S.; Santos, Gustavo R. C.; Silva, Alexandre G.; Mourão, Paulo A. S.; Correia, Maria T. S.Hymenaea courbaril var courbaril seed xyloglucan was efficiently extracted with 0.1 M NaCl, followed by ethanol precipitation (yield = 72 ± 5% w/w). Its amorphous structure was identified by the pattern of X-ray diffraction. The monosaccharide composition was determined by GC/MS analysis of the alditol acetates and showed the occurrence of glucose:xylose:galactose:arabinose (40:34:20:6). One-(1D) and two-dimens...
Characterization and rheological study of the galactomannan extracted from seed...
Albuquerque, Priscilla B. S.; Barros Junior, Wilson; Santos, Gustavo R. C.; Correia, Maria T. S.; Mourão, Paulo A. S.; Teixeira, J. A.Galactomannan extracted from seeds of Cassia grandis with 0.1 M NaCl, followed by ethanol precipitation, presented a yield of 36 ± 8%. The polysaccharide has a constant mannose/galactose ratio (2.44:1). Methylation analysis, one and two dimensional NMR spectroscopy confirmed that the polysaccharide has a central core composed of 4-linked β-mannose units, with branches of galactose, linked to the carbohydrate co...